<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>登录成功</title>
    <link href="https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap" rel="stylesheet">
    <style>
        body {
            font-family: 'Roboto', sans-serif;
            background: linear-gradient(135deg, #f0f8ff, #e6f7ff);
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }

        .container {
            background-color: #ffffff;
            padding: 40px;
            border-radius: 10px;
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
            text-align: center;
            width: 350px;
            max-width: 90%;
        }

        h1 {
            color: #333333;
            margin: 0 0 25px;
        }

        .icon {
            font-size: 60px;
            color: #007bff;
            margin-bottom: 25px;
        }

        .welcome-message {
            font-size: 19px;
            color: #666666;
            margin-bottom: 25px;
        }

        .button {
            background-color: #007bff;
            color: #ffffff;
            border: none;
            padding: 12px 24px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 17px;
            transition: background-color 0.3s, transform 0.3s;
        }

        .button:hover {
            background-color: #0056b3;
            transform: scale(1.05);
        }

        /* 响应式设计 */
        @media (max-width: 400px) {
            .container {
                width: 100%;
                margin: 25px;
                padding: 30px;
            }

            .icon {
                font-size: 50px;
            }

            .button {
                padding: 10px 20px;
                font-size: 15px;
            }
        }
    </style>
</head>

<body>
<div class="container">
    <i class="icon">&#128526;</i> <!-- 使用Unicode字符作为图标 -->
    <h1>用户登录成功的界面</h1>
    <p class="welcome-message">欢迎回来！</p>
    <button class="button" onclick="location.href='/login'">退出登录</button>
</div>
</body>

</html>
